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arXiv 2110.09486cond-mat.str-el
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利用霍尔效应揭示“非金属”金属FeCrAs中的各向异性电子散射率

Revealing an anisotropic electronic scattering rate in the "non-metallic" metal FeCrAs using the Hall effect

Ben Lau, Wenlong Wu, Stephen R. Julian

摘要:

利用低场霍尔效应研究了磁阻挫金属FeCrAs的磁性与“非金属”输运之间的关系。我们发现,低场霍尔系数是依赖于晶体取向,并表现出两个温度引起的符号反转时,电流是在$ab$平面内。我们认为,这些意见是由于散射磁波动,成为动量依赖于附近的长程磁序的发病。然而,这种额外的自旋涨落散射似乎是在非金属电阻率之上的,洪德的金属轨道间相关性仍然是非金属行为的一个可能来源。

英文摘要:

We probe the relationship between magnetism and "non-metallic" transport in the magnetically frustrated metal FeCrAs using the low-field Hall effect. We find that the low-field Hall coefficient is dependent on crystal orientation, and exhibits two temperature-induced sign reversals when the current is within the $ab$-plane. We suggest that these observations are due to scattering from magnetic fluctuations that become momentum-dependent near the onset of long-range magnetic order. It seems, however, that this additional spin-fluctuation scattering rides on top of the non-metallic resistivity, and Hund's metal interorbital correlations remain a possible source of the non-metallic behaviour.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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